Former Democratic aide pleads guilty to doxing GOP senators attending Kavanaugh hearing

A former congressional Democratic staff member pleaded guilty on Friday to posting private information about Republican senators who took part in the hearings on sexual assault allegations against then-Supreme Court nominee Brett KavanaughBrett Michael KavanaughGOP leaders go into attack mode against Harris Kamala Harris: The right choice at the right time Trump says Harris was 'my No. 1 pick' for Biden's VP MORE.

Jackson Cosko, 27, pleaded guilty to two counts of making public restricted personal information and one count each of computer fraud, witness tampering and obstruction of justice, The Washington Post reported.

The five federal felony counts carry maximum penalties up to 20 years in prison. In accordance with a plea agreement, prosecutors said a sentencing range of 46 to 57 months applied under federal guidelines.

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Cosko, who has served about four months in jail since he was charged, will be sentenced on June 13, the newspaper noted.

The agreement comes after Cosko was accused of releasing the private information of five Republican senators last year.

Cosko was reportedly upset after he had been fired from the office of Sen. Maggie HassanMargaret (Maggie) HassanSenate Democrats demand answers on migrant child trafficking during pandemic Hillicon Valley: Feds warn hackers targeting critical infrastructure | Twitter exploring subscription service | Bill would give DHS cyber agency subpoena power Senate-passed defense spending bill includes clause giving DHS cyber agency subpoena power MORE (D-N.H.) in May. He said in court filings that he had "engaged in an extraordinarily extensive data theft scheme" by burglarizing the office several times after his ouster to steal sensitive information he could use later.

According to the Post, Cosko said he "became angry" on Sept. 27 as he watched Kavanaugh, President TrumpDonald John TrumpDemocrat calls on White House to withdraw ambassador to Belarus nominee TikTok collected data from mobile devices to track Android users: report Peterson wins Minnesota House primary in crucial swing district MORE’s then-Supreme Court nominee, testify before the Senate Judiciary Committee. Kavanaugh's hearing came after he was accused of sexual assault by Christine Blasey Ford.

Ford testified before the Senate panel in late September that she had been assaulted by Kavanaugh when they were in high school in the 1980s. He vehemently denied Ford's and two other women's allegations in his own subsequent hearing.

Cosko admitted to the court that he responded to the contentious hearings by anonymously editing the Wikipedia pages of five Republican senators to add their phone numbers and home addresses, according to the Post.

The information was quickly removed when it was discovered, and aides contacted authorities.

Cosko said the group included GOP Senate Judiciary Committee members Lindsey GrahamLindsey Olin GrahamHillicon Valley: Facebook removed over 22 million posts for hate speech in second quarter | Republicans introduce bill to defend universities against hackers targeting COVID-19 research | Facebook's Sandberg backs Harris as VP pick Republicans set sights on FBI chief as Russia probe investigations ramp up The Hill's 12:30 Report - Speculation over Biden's running mate announcement MORE (S.C.), Mike LeeMichael (Mike) Shumway LeeDavis: The Hall of Shame for GOP senators who remain silent on Donald Trump Overnight Defense: Air Force general officially becomes first African American service chief | Senators introduce bill to block Trump armed drone sale measure | State Department's special envoy for Iran is departing the Trump administration Senators introduce bill to block Trump armed drone sale measure MORE (Utah) and Orrin HatchOrrin Grant HatchBottom line Senate GOP divided over whether they'd fill Supreme Court vacancy  Five takeaways as panel grills tech CEOs MORE (Utah) as well as Sen. Rand PaulRandal (Rand) Howard PaulWatchdog calls for probe into Gohmert 'disregarding public health guidance' on COVID-19 Massie plans to donate plasma after testing positive for COVID-19 antibodies After trillions in tax cuts for the rich, Republicans refuse to help struggling Americans MORE (R-Ky.) and Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellMcConnell warns control of Senate 'could go either way' in November On The Money: McConnell says it's time to restart coronavirus talks | New report finds majority of Americans support merger moratorium | Corporate bankruptcies on pace for 10-year high McConnell: Time to restart coronavirus talks MORE (R-Ky.).

Cosko was caught sneaking into Hassan’s office after 10 p.m.  to log on to an aide’s computer. He was recognized by another staffer and ordered to leave, according to court papers.

The other aide then received a threatening email minutes later with the subject line "I own Everything." The message reportedly stated, "If you tell anyone I will leak it all. Emails signal conversations gmails. Senators children’s health information and socials," according to plea papers reviewed by the Post.

Cosko was arrested on Oct. 3.